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measuring sinking speed
i have read about measuring sinking speed, but have not seen figures that can be measured sistematically so we can have some certainty.
perhaps some1 has a method and can bring data or links. in the meantime, as i design and fly gliders and have a vario installed that tells me the height at glide every 20 feet, it occured to me to time when reaches the next figure. i tried this with 1 of my planes. now was a matter of dividing feet by time. took several times and got an average of about 14 seconds, so this tells me that the average sinking speed of that particular plane is 1.43 ft/seconds. will keep doing this with all my planes. with this i will learn which 1 is more efficient by staying longer in the air. this way i can reach conclusions on whatever i change on my planes. >>>sept 15: update: i finished taking readings, and also noticed that in some of my planes, even if fly slower, the sinking speed is higher, so i began to measure flying speed too with another instrument (named "how fast"-no longer available). and if climbed to certain height (100 meters, for instance) and then started timing the flight, i got all that i needed to learn which plane takes more to land. it is 1 of those things that even if easy, are tedious work, but eventually i got all. i started a forum trying to learn if some1 has done something like this, or an even better way, but so far nothing has shown. so from now on, when i change something in my planes, i have the way to see if it was an improvement-or not. real data. |
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Last edited by phil alvirez; Sep 15, 2017 at 11:11 AM.
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